11 14 110 Removing and installing, sealing/replacing rear timing case cover (B48AO0)

WARNING: This page is about a different variant/trim than selected.

Special tools required:

11 4 470
118815
119 182
119 184
119 181
2 360 215
119 183

CAUTION: Engines with surface sealant:
Application time of sealing compound max. 12 minutes.

Necessary preliminary work:

Remove ENGINE WITH GEARBOX .
Mount ENGINE ON ASSEMBLY STAND .
Remove FLYWHEEL .
Remove CYLINDER HEAD .
Remove OIL SUMP .

REMOVAL:

Release screws (1).

Remove coolant line (2).

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CAUTION: Magnet wheel (1) is magnetic.
Keep magnet wheel (1) in a plastic bag away from metallic shavings/debris.

Remove magnet wheel (1) from crankshaft.

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Release screws in the sequence 11 to 1 .

Fig 1: Rear Timing Case Cover Screws Loosening Sequence

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Loosen gear case cover with a screwdriver (1) in direction of arrow.

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Loosen gear case cover with a screwdriver (1) in direction of arrow.

Remove gear case cover.

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CAUTION: Do not use any metal-cutting tools (e.g. emery cloth).

Remove gasket remnants from the crankcase with special tool 11 4 470.

Check that fitting sleeves (2) are correctly fitted, replace if necessary.

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INSTALLATION:

When replacing the rear timing case cover:

NOTE: Application time of sealing bead (1) max. 12 min.
Thickness of sealing bead: 1.5 to 2.0 mm .

Apply sealing bead (1) at the positions indicated (see illustration) on the inside of the timing case cover.

Parts:

Sealing bead (1): SEALING COMPOUND 2.2

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CAUTION: The radial shaft seal must be installed dry.
Do not use engine oil or lubricant.

Preassemble special tool 11 8 815 on crankshaft.

Mount the timing case cover with radial shaft seal (1).

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Insert bolts.

Tighten bolts in the sequence 1 to 11 .

Tightening torque: 11 14 1AZ .

Fig 2: Rear Timing Case Cover Screws Tightening Sequence

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When reinstalling the timing case cover:

Support the timing case cover (1) from below.

Place punch inside in the radial shaft seal (2).

Drive radial shaft seal (2) outwards.

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Installation note:

Application time of sealing bead (1) max. 12 minutes.

Thickness of sealing bead 1.5 to 2.0 mm .

CAUTION: Do not use any metal-cutting tools (e.g. emery cloth).

Remove gasket remnants from the timing case cover using special tool 11 4 470.

Apply sealing bead (1) at the positions indicated (see illustration) on the inside of the timing case cover.

Parts:

Sealing bead (1): SEALING COMPOUND 2.2

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Mount timing case cover without radial shaft seal.

Insert bolts.

Tighten bolts in the sequence 1 to 11 .

Tightening torque: 11 14 1AZ .

Fig 3: Rear Timing Case Cover Screws Tightening Sequence

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Position special tool 11 8 815 on crankshaft.

NOTE: Illustration shows: N47, D20

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CAUTION: The radial shaft seal must be installed dry.
Do not use engine oil or lubricant.

Use special tool 11 8 815 to fit the radial shaft seal (1) in the direction of the arrow up to the timing case cover and position.

Remove special tool 11 8 815.

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Secure special tool 11 9 182 with special tool 11 9 184 on the crankshaft.

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Prepare special tool 11 9 181 for installation.

Attach special tool 2 360 215 on special tool 11 9 181.

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Pull on radial shaft seal with special tool 119 181 and 2 360 215 in combination with special tool 11 9 183.

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Screw on radial shaft seal with special tool 11 9 183 to limit position.

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NOTE: Check the fitting sleeve for damage.
Note the installation position of the magnet wheel.

Position magnet wheel (1) on crankshaft.

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Check O-ring (1) of coolant line (2) for damage.

In case the O-ring is faulty, the coolant line (2) needs to be replaced.

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Install coolant line (2).

Tighten screws (1).

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Concluding tasks:

Install OIL SUMP .
Install CYLINDER HEAD .
Install FLYWHEEL .
Remove ENGINE FROM ASSEMBLY STAND .
Install ENGINE WITH TRANSMISSION .